浅谈ARD3电动机保护器设计原理

电子工程师 2010-09-20 1180
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机械设计

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描述

Design of the ARD3 motor protector
1, ZHOU Zhong 1, HUANG Shao-jie 2
Abstract: This paper highlights idiographic design methods of the ARD3 motor protector, gives hardware ａnd software flow ｃhar diagram. According to hardware modules, the article starts description of the hardware modules schematic for detailed analysis, the combination of practical application note here is how to design the hardware, why this design ａnd the advantages ａnd disadvantages of this design. The conditions that motor protector usually works are poor, for the product more stable ａnd reliable performance, needing to use some anti-jamming measures, described in the text of these anti-jamming measures in practical use has proved to be successful.
Key words: motor protector；ARD3；protect function；ModBus



ARD3
Fig.4 Communications circuit
OL=20mA,@VOL=1.5V），片上复位电源POR电路，片上低电压检测电路（LVD）。该芯片有两种封装形式：LQFP-64（10mm×10mm）FP-64（14mm×14mm） 。CPU单元电路如图5所示。
Fig.5 Cpu circuit
RTC，定时器，看门狗等功能都已经集成到芯片内部，所以CPU单元的外围电路十分简洁，各引脚只需外接增加端口驱动能力的上拉电阻和稳定信号的滤波电容即可。
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